The `connect_sockets()` node util function is used to connect sockets even when inside node groups, when only a "virtual socket" is available. It takes care of creating the interface in the group, so that a socket is available in the Input or Output node. This feature was broken after the change of API, replacing `tree.inputs` and `tree.outputs` with a unified `tree.interface`. This commit updates the util to account for this change. Fixes an exception in the Node Wrangler add-on, when connecting a socket of a type not yet available in an Input or Output node. More info here: https://wiki.blender.org/wiki/Reference/Release_Notes/4.0/Python_API#Node_Groups Pull Request: https://projects.blender.org/blender/blender/pulls/112960